A. Matsunaga, M. Tsugawa, and J. Fortes. DG.O, volume 228 of ACM International Conference Proceeding Series, page 112-121. Digital Government Research Center, (2007)
D. Kutz, J. Mostafa, M. Girard, and D. Stark. DG.O, volume 89 of ACM International Conference Proceeding Series, page 151-152. Digital Government Research Center, (2005)
A. Matsunaga, M. Tsugawa, and J. Fortes. DG.O, volume 89 of ACM International Conference Proceeding Series, page 255-256. Digital Government Research Center, (2005)
D. Sigthorsson, M. Oppenheimer, and D. Doman. AIAA Guidance, Navigation, and Control Conference, Toronto, CA, American Institute of Aeronautics and Astronautics, (August 2010)